I need help with an upgrade.
When research, it can use anytime until the end of that upgrade.
By example: Evolution chamber has an upgrade "called : evolve", if I upgrade this 1 time all is right.
But if, I build 2 Evolutions Chambers I can upgrade that same upgrade 2 times with the same cost by clicking on both.
How Do I remove that ?
When research, it can use anytime until the end of that upgrade.
By example: Evolution chamber has an upgrade "called : evolve", if I upgrade this 1 time all is right.
But if, I build 2 Evolutions Chambers I can upgrade that same upgrade 2 times with the same cost by clicking on both.
How Do I remove that ?